数据表返回所有行而不是10

Question

这是我的AJAX：

$('.customers-datatable').dataTable( {
    "order": [[ 0, "asc" ]],
    "processing": true,
    "serverSide": true,
    "ajax": {
        url: 'ajax/customers.php?action=list',
        type: "POST"
    },
    "columns": [
        null,
        null,
        null,
        null,
        null,
        { "orderable": false, "width": "20px" }
    ]
});

这是我的PHP / MySql：

$req = $pdo->prepare('SELECT * FROM customers');

$req->execute();

$result['draw'] = 1;
$result['recordsTotal'] = $req->rowCount();
$result['recordsFiltered'] = 10;
$result['data'] = array();

while( $row = $req->fetch() ) {

    $result['data'][] = array($row['lastname'] . ' ' . $row['firstname'], $row['zipcode'], $row['city'], $row['email'], $row['telephone'], "");

}

$req->closeCursor();

所以，获得10个元素，我得到了整个列表。以下是渲染内容的预览：

关于如何将表限制为10个结果的任何想法？

Answer 1

您是否选中了limit关键字？

SELECT * FROM customers LIMIT 0,10

并且一般limit会与ORDER BY some_column DESC结合使用以提供更多感官（例如，按时间或按ID）。

<强>更新：

进行分页，只需在切换页面时传入不同的参数：

SELECT * FROM customers LIMIT 0,10 // 1-10 rows for page 1 
SELECT * FROM customers LIMIT 10,10 // 11-20 rows for page 2
SELECT * FROM customers LIMIT 20,10 // 21-30 rows for page 3
.... and so on

Answer 2

在数据表中使用pageLength设置 - 例如

$('#myTable').dataTable( {
    "pageLength": 10 
});

这将输出10行

Answer 3

好的，我找到了解决问题的方法。

这是我的新数据数组：

$result['data'][] = array(  "name"      =>  $row['lastname'] . ' ' . $row['firstname'],
                            "zipcode"   =>  $row['zipcode'],
                            "city"      =>  $row['city'],
                            "email"     =>  $row['email'],
                            "telephone" =>  $row['telephone'],
                            "action"    =>  "<a href=\"#\" class=\"button-delete\" id=\"" . $row['customer_id'] . "\"><i class=\"fa fa-close fa-2x text-danger\"></i></a>"
                            );

这是我的ajax调用（我将serverSide设置为false，因为它打破了分页）：

$('.customers-datatable').dataTable( {
    "order": [[ 0, "asc" ]],
    //responsive: true,
    "processing": true,
    "serverSide": false,
    "ajax": {
        url: 'ajax/customers.php?action=list',
        type: "POST"
    },
    "columns": [
        { "data": "name" },
        { "data": "zipcode" },
        { "data": "city" },
        { "data": "email" },
        { "data": "telephone" },
        { "data": "action",
          "orderable": "false",
          "width": "20px"
        }
    ]
});